Video register picture evaluation to support drivers training and examination

This paper refers to some problems with digital video recording of picture during driver training and examination process for obtaining driving license. Since 10 April 2006 year, all examining institutions must use video and audio recording devices in Poland. The legal regulations in force do not clearly determine the functional requirements and technical parameters for video recorders; hence the actual devices used do not meet user requirements. There is main influence on the picture quality have the optical system of the camera. Considerable influence on the quality has an aberration errors. Aberration leads to blurring of the image produced by an image-forming optical system. Aberrations fall into monochromatic and chromatic classes of optical errors. Monochromatic aberrations produced without dispersion. These include the aberrations at reflecting surfaces of any coloured light, and at refracting surfaces of monochromatic light of single wavelength. This paper describes all types of aberration. Charge-coupled device (CCDs) used as main part of the digital cameras, however, there is now a well-established alternative, the CMOS image sensor. Both CCD and CMOS image sensors, described this paper, capture light using a grid of small photo sites on their surfaces. This paper describes advantages and disadvantages of both transducers. The authors have made an attempt to determine camera parameters, their location and quality of the picture. In mentioned case the objective and subjective picture validation methods and sample pictures from the cameras will be presented.